Event image
The Simple Argument that Changed the World View of Physics

Clock icon
18:30 – 19:30 14 Feb 2018
Location icon
Lecture Theatre G05, Western Gateway Building, University College Cork, Cork, Ireland

The Simple Argument that Changed the World View of Physics

Professor Reinhard F. Werner (Leibniz Universität Hannover, Germany)

Abstract:
It is very rare that a question
touching on our world view can be decided experimentally.
One such case, central to quantum mechanics, is the
argument of Einstein, Podolski and Rosen from 1935, as
sharpened by John Bell in the 1960s. In this talk I will
present an elementary version of this argument, which
shows that describing quantum systems in terms of their
‘properties’ or by a list of ‘true’ statements pertaining to
them is bound to fail. So it seems that quantum particles
defy the rules of classical logic as laid out by George
Boole. I will discuss an attempt by John von Neumann, the
creator of the formalism of quantum mechanics, to identify
a ‘quantum logic’ replacing Boole's rules. One might have
hoped that this logic would play the same role for the
programming of quantum computers as Boole's logic
undoubtedly did for classical computers. However,
quantum logic turned out to be quite useless for this
purpose. This is related to the observation that quantum
logic never changed the Laws of Thought (title of a book
by Boole). What was needed instead was a formalism for
actions on quantum systems, analogous to gates in a
computer. I will give examples for quantum gates and
highlight some typical features.

Reinhard F. Werner is a Professor at
the Institute of Theoretical Physics at the Leibniz Universität
Hannover (Germany). He is well known for his research on
the conceptual and mathematical foundations of quantum
theory. Professor Werner made outstanding contributions to
quantum information theory, as well as quantum statistical
mechanics and the theory of time in quantum mechanics.
Aside of his many ground-breaking results in mathematical
physics, his leading role in the scientific community of
quantum information is demonstrated by being a contributing
author of the European road map for research in the field of
Quantum Information Sciences and Technology which is
identified as a key technology of the 21st century.

 

Organised by: IOP Ireland/UCC

Invite friends
Link copied!
Location icon
Lecture Theatre G05, Western Gateway Building, University College Cork, Cork, Ireland
Clock icon
18:30 – 19:30 14 Feb 2018

Invite friends
Link copied!
No registration required unless stated otherwise